Considering death is inevitable, cryopreservation just before you cease to function is, quite possibly, the best rational choice you can make. Of course, it's a bit selfish, as the resources you commit to it are substantial and your offspring could benefit from them.

Betting your final moments on specific advances of technology is also not an easy decision. Plus, you may wake up in a world you don't like.

OTOH, the other option is not to wake up at all.